Frank riiind



(No Model.)

P. RHIN D. BICYCLE LAMP.

No, 560,429. Patented May 19, 1896.

INVENTOR ANDREW BLRANAMJHDTDUTNO WASNINGTON n:

NITED STATES PATENT Orrrcn.

FRANK RIIIND, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRIDGE- PORT BRASS COMPANY, OF SAME PLACE.

BICYCLE-LAMP.

SPECIFICATION forming part of Letters Patent No. 560,429, dated May 19, 1896.

Application filed MarchlQ, 1896. Serial No. 583,948. (No model.)

To all whom it may concern: the cone reflector in. any ordinary or pre- Be it known that I, FRANK RHIND, acitizen ferred manner, the special means of holding of the United States, residing at Bridgeport, the shields in place not being of the essence in the county of Fairfield and State of Conof my invention, it being of course required 55 necticut, have invented certain new and usethat they should be readily removable.

ful Improvements in Bicycle-Lamps; and I It is of course well understood that when do hereby declare the following to be a full, heat-rays of any appreciable intensity come clear, and exact description of the invention, in contact with a glass surface the glass will such as will enable others skilled in the art expand. It is impossible, however, to insure -60 to which it appertains to make and use the that expansion of all parts of the glass shall same. be uniform. Uneven expansion of the glass My invention relates to the class of bicycleis, as a matter of fact, unavoidable, the exlamps in which the burner itself has no chimpansion being necessarily greatest where the ney, but the body of the lamp constitutes the heat is most intense. If the surface with 65 chimney; and the object of my invention is which the heat-rays come in contact is a flat to provide practical, durable, andinexpensive surface, it is obvious that one of two things means for protecting both the back and cone must happen-the glass must eitherbulge in reflectors and the glass at the front of the some direction or break. latter, so that said reflectors will not be in- If, as in the presentinstance, the heat-rays 7o jured or tarnished to the slightest extent in are most intense at approximately the center use, all dirt and soot being prevented from of the glass, it is obvious that the sides of the comingin contact with the reflectors and curglass will expand to a lesser extent than the rents and eddies of air being prevented from center. As the molecules of the glass will be entering the cone-reflector from the body of under uneven tension, one of two things must 2 5 the lamp, so that the flame is caused to burn happen-the glass must either bulge or break. better, and smoking under ordinary circum- If the glass is flat, it is extremely unlikely stances is prevent-ed. Moreover, should the that it will bulge and extremely likely that wick be turned up too high or the body of the it will break, there being no impulse to start lamp be filled with smoke from any cause no a curvature in eitherdirection. I have found 8o 0 smoke could comein contact with the reflectafter long-continued experiments that it is ing-surface of either the front or cone repractically impossible to make flat glasses flectors to cause them the slightest injury, serve the purpose of shields for the reflectors nor could the reflectors be injured by heat. in bicycle-lamps, it being obvious that the In order to overcome these difficulties, I have shields must be in close proximity to the 8 5 5 devised the novel construction which I will flame and that uneven expansion will take now describe, and then specifically point out place everytime the lamp is lighted. I have in the claims. found, moreover, that by using curvedi. (2.,

The figure is a sectional view illustrating concavo-convex-shields the danger of breakthe application of my invention to the wellage of the shields is practically done away 40 known Search-Light lamp, portions of with. The reason for this is that there is no which are shown only in dotted lines. resistance to the expansion of the glass, the 1 denotes the body; 2, the burner 3, the glass expanding under heat in the direction cone-reflector, which is provided with a glass of the curvature, and it making no difference,

Al at its outer end, and 5 the back reflector. so far as I have been able to discover, at 5 6 denotes transparent concavo-convex what portion of the shield the heat is most shields having parallel faces, one of which I intense.

place in front of the back reflector and one Having thus described my.invention, I

at the inner end of the cone reflector. These claim concavo-convex shields are made of glass and 1. In a bicycle-lamp, the combination with 50 may be held in place, respectively, in front a no-chimney burner, a body, and a cone reof the back reflector and at the inner end of flector, of a back reflector having secured thereto a transparent shield with parallel faces to protect the back reflector from smoke and heat.

2. In a bicycle-lamp, the combination with a no-chimney burner, a body and a cone reflector, of a back reflector having secured thereto a protecting concave-convex glass shield with parallel faces.

3. In a bicycle-lan1p, the combination with a no-chimney burner, a body, and a cone reflector, having a transparent shield with parallel faces on its inner end, of a back reflector having secured thereto a transparent shield also having parallel faces to protect said reflector from heat and smoke.

at. In a bicycle-lamp, the combination with a no-chimney burn er, a body and a cone reflector having a protecting concave-convex glass shield secured to its inner end, of a back reflector, having secured thereto a transparent shield to protect it from heat and smoke.

5. In a bicycle-lamp, the combination with a no-chimney burner, a body and a cone, of a transparent shield with parallel faces secured to the inner end of the cone to protect it from smoke and heat.

6. In a bicycle-lamp the combination with a no-chimney burner, a body and a cone reflector having secured to its inner end a protecting concave-convex glass shield, of a back reflector having secured thereto a protecting concave-convex glass shield, substantially as described.

'7. In a bicycle-lamp, the combination with a no-chimney burner, a body and a cone, of a transparent concave-convex shield with parallel faces secured to the inner end of the cone to protect it from smoke and heat.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK RIIINI).

Witnesses:

A. M. WoosTEB, S. V. RICHARDSON. 

